Financial Instruments (Details 2) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Amortized Cost
Due in more than five years	$ 276
Total	276
Fair Value
Due in more than five years	333
Total	333
Investment Holdings
Impairment	30
Investment in equity interests	2,648	$ 0
Equity securities in privately held companies | Long-Term Financing Receivables and Other Assets
Investment Holdings
Investment amount	$ 128	$ 45